Smokestack cover



Patented May 1, 1923.

titan RICHARD J". ONEILL, OF DENVER, COLORADO, ASSIGNOR OF ONE-HALF TO S.

MONAMARA, 01? DENVER, COLORADO.

SMOKESTACK COVER.

Application filed June 24,

T 0 all whom it may concern:

Be it known that I, RICHARD J. ONEILL, a citizen of the United States, and a resident of the city and county of Denver and State of Colorado, have invented certain new and useful Improvements in Smokestack Covers, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which the invention appertains to make and use the same.

My invention relates to improvements in smoke stack covers, and the invention has for its object the providing of means for cutting off the draft through'the fire box, when the fire is removed from the fire box, thereby permitting a gradual cooling of the fire-box.

Another object of the invention is to provide means for covering the smoke stack of a locomotive prior to dumping the fire from the latter so as to shut off the draft of cold air through the fire box of the locomotive and thereby prevent injury to the arch, lining and tubes of the latter resulting from sudden lowering of the temperature in the locomotive.

Another object of the invention is to provide means for closing off the draft through a locomotive, whereby the temperature may be retained in the latter and permitted to be gradually lowered, whereby injury to the locomotive will be obviated as a result of the sudden cooling, when the fire is removed from the fire box thereof.

With these and other objects in view, the invention will now be described in detail with reference to the accompanying drawing, which forms a part hereof.

In this drawing Figure 1 is a fragmental view of a locomotive showing the smoke stack partially in section and with my invention applied thereto; Figure 2 is a view showing the application of my invention to the smoke stack, the side view being partially in section; Figure 3 is a view illustrating the cover thrown back so as to permit a circulation of air through the locomotive; Figure 4 is a cross sectional view made on the line 44 of Figure 1; and Figure 5 is a top view of the smoke stack cover.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawing by the same reference characters.

The numeral 5 designates the boiler por- 1921. Serial No. 480,112.

represents the smoke stack thereof. It will be understood that a relatively strong draft comes in through the fire box of the l0comotive and passes out through the smoke stack.

'tion of the locomotive, and the numeral 6 When the locomotive is not in use or being stored the fuel is dumped therefrom, and due to the circulation of cold air through the locomotive, a sudden lowering in temperature will result after the fire has been removed from the same. By means of my invention the top of the smoke stack is closed when the fire is dumped fromthe locomotive, the draft through the same is closd off, thereby retaining the heat in the locomotive and permitting a gradual cooling off of the ame.

My improved cover is of suchconstruction that it may be permanently fixed to the smoke stack, and be actuated'from the cab of the locomotive to cover and uncover the smoke stack. This cover comprises two segmental parts, 7 and 8, which are respectively supported by U-"shaped members 9 and 10. These U-shaped members straddle the smoke stack 5 and are pivoted as shown at 12 to a 17 is'secured to the band 13, and spaced away from the off-set portion16 so that two segmental gears respectively designated 18 and 19 may be interposed between the'off-set portion 16, and the saddle 17. These gears 18 and 19 are respectively mounted upon spindles 20 and 21, which spindles are journaled in the off-set part 16 and the saddle 17.

One leg of each of the U-shaped members 9 and 10 is respectively fixed to the spindles 20 and 21, as shown at 22 and 23 respectively. A pulley wheel 24 is fixed to the outer extremity of the spindle 20, and an operating cable 25 passes around this pulley wheel 24 and extends to the cab of the locomotive, whereby the cover may be actuated from the cab. By actuating the cable 25, the pulley wheel 24 will be rotated and as a consequence rotate the spindle 20, and thereby move the member 7 of the cover and also Ill) the segmental gear 18'. This segmental gear meshes with the segmental gear 19, and through the medium of the latter the member S of the cover will also be actuated.

The members 7 and 8 of the cover are respectively supported by the stirrup members 9 and 10 and carried by the latter, by means of pins 27 which pass through the horizontal portions of the stirrup members 9 and 10 and connect with members 7 and 8. Spiral springs 28 surround these pins 27 between the horizontal portions of the stirrup members 9 and 10, and the members 7 and 8, whereby the said members 7 andv 8 it'll be permitted to move against the tension of the said springs 28. v When the cover is in a position to cover the smoke stack, as shown in Figure l, the tension or these springs 28 serve to retain the two members 7 and 8 firmly seated upon the smoke stack, and when the cover is removed, as shown in Figure 3, the springs will be compressed in order to permit the said members "7 and 8 to move outwardly and swing in the arc by the movement of the said members necessary to open the smoke stack.

Each of the members 7 and 8 of the cover is provided with a hook 30, adapted to engage with the smoke stack in order to prevent further movement of the members 7 and 8 than is necessary to open the smoke stack. The member 7 is provided with an off-set lip 31 at its inner edge which overlaps the inner edge of the member 8 when the two members are in position to close the smoke stack. Y

It is understood that the cable 25 may be actuated to either open or close the smoke stack, and that both members 7 and 8 are simultaneously actuated thereby, through the medium of the segmental gears 18 and 19.

While I have described and illustrated herein one certain form of my invention, it is understood that I am not limited thereto,

' and that the same may be modified and varied without departing from the spirit of the invention or the scope of the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is l. A smoke stack cover comprising two members adapted to cover the top of the smoke stack, each having a U shaped support pivoted to the smoke stack and carrying the member, and springs positioned between said supports and said members, said springs being adapted to hold said members in contact with said smoke stack.

2. A smoke stack cover comprising two swingingly mounted members adapted to cover the top of the smoke stack; yokes piv-- oted to said smoke stack and adapted to pass over same in spaced relation to said members; pins slidably connecting said yokes to said members and springs positioned between saidyokes and said members and adapted to hold the latter in Contact with the smoke stack.

3. A smoke stack cover comprising swingingly mounted semi-circular flanged members adapted to cover said smoke stack; pivoted yokes adapted to move said members toward and away from each other and meshed segmental gears secured to said yokes for the purpose of causing siiiiultaneous movement thereof.

4. A smoke stack cover comprisingmembers adapted to cover said smoke stack; pivoted supports adapted to carry said members and springs positioned between said supports and said members and adapted to hold said members in resilient contact with said smoke stack.

5. A smoke stack cover comprising members adapted to cover the smoke stack; pivoted supports adapted to carry said members; springs positioned between said supports and said members and adapted to. hold said members in resilient contact with the smoke stack and projections carried by said members and adapted to engage said smoke stack to limit the movement of the members. v In testimony whereof, I afiix my signa ture.

RICHARD J. ONEILL. 

